4 papers
Dynamical baryon resonances from chiral unitarity
A. Ramos, C. Bennhold, A. Hosaka +6
We report on the latests developments in the field of baryonic resonances generated from the meson-baryon interaction in coupled channels using a chiral unitary approach. The colle…
Chiral doublet model for the positive and negative parity nucleons
D. Jido
We discuss the properties of the nucleon (N) and its excited state with odd parity (N*) under the aspect of chiral symmetry, identifying them with suitable representations of the c…
Regulariztion dependence of S=0 and S=-1 meson-baryon system in the chiral unitary model
S. I. Nam, H. -Ch. KIm, T. Hyodo +2
We investigate the dependence of s-wave meson-baryon scattering amplitudes on different regularizations within the framework of the chiral unitary model. We employ two different re…
Suppression of PiNN(1535) Coupling in the QCD Sum Rule
A. Hosaka, D. Jido, M. Oka
The πNN^* and ηNN^* coupling constants are studied in the QCD sum rule ($N^* \equiv N(1535)). We investigate the two point functions between the vacuum and a one meson state in the…